Tach is crap
Junior Member
Joined: Dec 2001
Posts: 15
Likes: 0
From: Louisville,KY Crawfordville (Tallahassee), FL
I'm with you guys. MY 91 z 305tpi has this problem. The 91 b4c 350tpi doesn't. I know the problem isn't the cluster, i changed mine. It also causes the gas gauge to act funny. I'm leaning torwards a ground problem
Junior Member
Joined: Dec 2001
Posts: 15
Likes: 0
From: Louisville,KY Crawfordville (Tallahassee), FL
I'm with you guys. MY 91 z 305tpi has this problem. The 91 b4c 350tpi doesn't. I know the problem isn't the cluster, i changed mine. It also causes the gas gauge to act funny. I'm leaning torwards a ground problem
Supreme Member
Joined: Dec 2001
Posts: 1,418
Likes: 1
From: Morris, IL
Car: '91 t-top RS; '91 hrdtp Z28
Engine: LO3;383tpi
Transmission: 700r4;very nice 700r4
Axle/Gears: 4.10 zt posi, 3.70 auburn
Mine did the same thing. I replaced the entire cluster and it works now. Though the factory tachs are known for their poor quality. I have an RS, so it might be a different problem, though I doubt it.
Joined: Jul 1999
Posts: 400
Likes: 15
From: NW/burbs Chicago
Car: 92 CAMARO RALLY SPORT
Engine: 383 sbc w/250 shot of nitrous
Transmission: AMERICAN POWERTRAIN- EXTREME TKX
Axle/Gears: STRANGE ENG. 12 BOLT 3:90 SPOOL
I know exactly what is wrong. Pull the cluster , the contact points on the circuirt card where the gages are attached is only pressed on. If you are good with solder it is an easy fix
Supreme Member
Joined: Mar 2002
Posts: 4,812
Likes: 0
From: 62656
Car: 1991 S10 pickup 2700lbs
Engine: 4.3L Z TBI
Transmission: 700R4
Axle/Gears: 3.08 7.625"
what if the tach has problem of sticking at 2000 or 2200 rpm at start up and not returning to normal for long period of time ? tempo gauge pagging way over rigt also and jamming there ?
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